Position Control of Trays by Retro-Reflex Sensors
Before sealing trays with a film, it must be ensured that they are correctly positioned in the packaging lines. Improper positioning can result in the tray being too high and the sealing process not being carried out correctly. A retro-reflex sensor with laser light is mounted on the side of the conveyor belt and detects the top edge of the tray. The fine laser beam ensures that all trays to be sealed are correctly positioned and not higher than intended.
Universal Retro-Reflex Sensors
Universal retro-reflex sensors are suitable for the detection of glossy, chrome-plated or reflective surfaces thanks to the polarization filter. They work with red light or laser light. Objects are detected by interrupting the light beam between the sensor and the reflector.
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